Relationships versus measurement

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LEUSA@dteenergy.com
Newbie
Posts: 1
Joined: Fri Mar 29, 2002 3:39 am

Relationships versus measurement

Post by LEUSA@dteenergy.com »

I am looking for examples of relationships versus process measurements? Our=

management stresses process measurement and basically disregards the
importance of relationships in the process. I sure could use some examples.=


Hopefully my request is clear.

Thank you.

Alex Leus
313-235-9944
leusa@dteenergy.com
"Raymond T. Joseph"
Junior Member
Posts: 11
Joined: Fri Mar 29, 2002 3:39 am

Relationships versus measurement

Post by "Raymond T. Joseph" »

Alex,

There is no conflict here. Your management has invested in its existing
process measurements and it sounds like they are interested in investing
more. Physical measures provide the empirical data needed to correlate
process relationships. You may need to perform relationship studies for
statistical process control, process optimization, predictive maintenance or
failure detection. But these relationships are what you identify with the
data. Now if they only want to spend money on the measurements and not on
the impact of those measurements, maybe you are not talking to the right
people. Data by itself is useless.

Maybe this is just a conflict in semantics. Your management may not have
your abstract awareness that lets you categorize these issues as
relationships. Find the words that they use so you can deliver to them
solutions that they can understand. It is difficult to teach someone
something that they dont want to know. Find out what they want to know, in
their words, and use your abstraction skills along with analysis to deliver
value.

By the way, you can provide them with new process measurements with out
adding hardware to the process by exploiting known process relationships.
These analytical measurements, are system identification algorithms that use
physical measures along with process relationships to infer or
back-calculate unmeasured states. This is handy were the instrument
required to perform the actual measurement may be expensive, high
maintenance, long delay times, dangerous, unavailable in the require format
or some combination of these concerns. Or the state to be measured may be
unreachable, unobservable, or without a known measurement device. In some
instances, you may be able to take samples, have them analyzed off-line and
use the results to empirically model the relationships. Other cases, you
will have to rely on first principals to develop the relationships.

There is a whole world a fun out there. Enjoy yourself, be safe, and dont
push the old dinosaur - allow it to guide you both.

Raymond T. Joseph, PE
From: "Raymond T. Joseph" <
rjoseph@wt.net>
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